ANN model for prediction of life of punches of compound die ? How to get S-N curve and haigh diagram ??

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khushboo chhikara 2018-5-7

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https://ww2.mathworks.cn/matlabcentral/answers/399445-ann-model-for-prediction-of-life-of-punches-of-compound-die-how-to-get-s-n-curve-and-haigh-diagram

the maximum principal stress (σmax) and minimum principal stress (σmin) in a loading cycle are used to predict life of punches. The stress variation amplitude and mean stress in a cycle period are important, which are designated as the amplitude stress (σa) and mean stress (σm)

σa = (σmax-σmin)/2 σm = (σmax+σmin)/2

σmax = 330.01 σmin = -952.02